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Species Interactions

Species Interactions. Types of Species Interactions. Predation Competition Symbiosis Mutualism Commensalism Parasitism. Predation. Predation is any interaction between two organisms in which one organism (the predator ) consumes all or part of another organism (the prey ). Predation.

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Species Interactions

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  1. Species Interactions

  2. Types of Species Interactions • Predation • Competition • Symbiosis • Mutualism • Commensalism • Parasitism

  3. Predation • Predation is any interaction between two organisms in which one organism (the predator) consumes all or part of another organism (the prey).

  4. Predation • Herbivore-Plant Interactions • Herbivore-Plant Interaction

  5. Prey Defenses • Predation usually results in the evolution of defensive adaptations in prey. • These can include: • Chemical defenses (toxins, poison, acrid sprays) • Behavior (living in groups, scouts, alarm calls) • Morphological features (spines, color, structures that allow you to run fast or detect predators), and other traits

  6. Camouflage is protective coloration in which an animal resembles its background. Camouflage

  7. Competition • Competition in an interaction between two organisms that are using the same limited resource. • Competition can be: intraspecific within the same species interspecific between different species

  8. Which is which?

  9. Symbiosis • Symbiosis is an intimate relationship between different species in which at least one species depends upon the relationship to survive. Types • Mutualism • Commensalism • Parasitism

  10. Mutualism • Both partners benefit from the relationship (+, +)

  11. Commensalism • One partner benefits from the relationship; the other partner is not affected (+, 0)

  12. Parasitism • One partner benefits from the relationship; the other partner is harmed (+, -)

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